JPH02269610A - Method for packing cigarette - Google Patents

Abstract

PURPOSE: To improve the packing speed of cigarettes by controlling a sheet surface at the same speed as that of the drum rotating speed to the opposite direction of the drum rotation. CONSTITUTION: At a supply station 19, a pocket 28 moves in the same direction and at the same speed as each blank 5. As the pocket 28 is rotated together with a drum 27 and approaches the supply station 14, an arc shape in the normal state of cams 30-32 is transformed which changes a joint structure support device 29 from its normally positioned state. Accordingly, the pocket 28 is gradually accelerated until it offsets the rotation speed of the drum 27 in the rotational direction contrary to the drum 27 and stops at the station 14. Then the pocket 28 is moved in the radius direction with the inclination to the radius of the drum 27 of the pocket 28 unchanged and the finished packs 3 are received on the inner sheet surface 35 by a pushing member 15 while a wheel 13 is in a stationary position. This improves the packing speed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a method for storing cigarettes in a rigid box with a hinged lid.
(hereinafter referred to as a "flip top pack").

[Conventional technology]

Packaging machines used to pack cigarettes into flip-top packs are classified into continuous-feed and intermittent-feed types, depending on the method of feeding the cigarettes and bags to the packaging line.

Continuous feeding machines are not used much despite their relatively fast processing speed. This is because continuous-feed machines are structurally complex and have high operating and maintenance costs, and these machines generally require high quality for high-speed processing, especially when it comes to folding thin, lightweight packaging materials such as foil. This is because there are many sacrifices made. This is because packaging materials such as the above-mentioned foils are difficult to process in a continuous folding process.

For the reasons mentioned above, the most commonly used cigarette packaging machine is an intermittent feed type.

However, although intermittent supply packaging machines are superior in terms of reliability and quality, they have the disadvantage that they cannot improve processing speed due to structural problems.

[Problems to be solved by the invention] The above structural problems are mainly caused by "packing wheels"
That is, the blank is connected to an intermittent supplying roller or wheel which sequentially supplies the wrapping material formed on the frisive top back (hereinafter referred to as the "blank") and the stack of cigarettes, usually wrapped in foil. conveyor lines feeding the packing wheels.

In fact, beyond a certain maximum throughput speed, the accelerations and decelerations occurring in each step lead to collisions between the tobacco aggregates on the one hand and the empty boxes formed on the packing wheels, and on the other hand the supply conveyor. The alignment of empty boxes will become disordered on the top.

It is an object of the present invention to provide a method for packing cigarettes into flip-top packs, which does not involve the above-mentioned problems.

[Means to solve the problem]

In view of the above-mentioned problems, the present invention provides a method for packing cigarettes into flip-top packs, characterized in that it comprises the following steps.

That is, blanks are continuously fed from a first feeding station and pre-accumulated cigarettes are intermittently fed from a second feeding station to a continuously rotating packing wheel, and then a removal station feeds blanks from said packing wheel. The process involves taking out a flip-top pack filled with cigarettes and feeding it to a delivery device, wherein the banking wheel is coupled to a drum rotating at a constant speed and connected to the first and second feeding stations. a plurality of sheet portions each receiving a blank and a stack of tobacco from said drum, each sheet being associated with a drum and rotating with said drum at a substantially constant speed as it passes said first supply station; When passing through the second supply station, the drum is controlled to rotate in the opposite direction to the rotation direction of the drum at the same speed as the drum rotation speed.

Preferably, the delivery device is of an intermittent operating type, and the sheet portion is controlled to rotate at the unloading station in a direction opposite to that of the drum at the same speed.

[Example] Non-limiting examples of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 indicates a packaging machine for packing cigarettes into flip-top packs.

The packaging machine 1 includes a line 2 that stacks a predetermined number (usually 20) of cigarettes in layers (usually 3 layers) and supplies a stack 3 of cigarettes wrapped in foil. Packaging machine 1
furthermore comprises a line 4 for continuously supplying blanks 5 from a box 6, a take-off line or delivery device 7 for taking out the packed pack 8 of cigarettes, and a packing wheel 9. Line 2 and line 4 touch the two points, and wheel 9
A line 7 extends from a third point on the outer periphery of.

A line 2 (showing a part of winter in FIG. 1) is a known method that rotates intermittently around a horizontal axis and causes a stack of cigarettes 3 to be rotated intermittently around a vertical axis via a pushing member (not shown). It is equipped with a wrapping wheel 10 of a known type for conveying to a mold wheel 11.

When the tobacco stack 3 is intermittently fed to the wheel 11, it is provided with a reinforcing collar or "inner member" 1 in a known manner.
It is attached to 2.

The line 2 further rotates intermittently about a vertical axis to receive stacks 3 of tobacco from said wheel 11 and transports the stacks 3 of tobacco at a feeding station 14 along a path approximately tangent to the packing wheel 9. It is provided with an intermediate conveyor or wheel 13 of known type for feeding. In this feeding station 14, the outer periphery of the wheel 13 is arranged lower than the outer periphery of the wheel 9, as is known in the art, and a vertically operating pushing member 15 (FIGS. 2 and 3) moves the tobacco stack 3 onto the wheel 13. The material is extracted along the axis of the wheel 9 and supplied in the radial direction of the wheel 9.

In addition to the box 6, the line 4 is equipped with an ejector 16 of known type, which removes the blanks 5 from the bottom of the box 6 and feeds them one after another around the outer periphery of a feed roller 17 that rotates continuously about a horizontal axis. .

By means of a plurality of known types of feeding devices (not shown), the blank 5 is transferred to a delivery roller 18 which rotates at a constant speed about a horizontal axis.
is sent continuously at all times. This delivery roller 18 transports the blank 5 to the packing wheel 9 at a feeding station 19 located upstream of the feeding stage thin 14 in the direction of rotation 20 of the packing wheel 9 indicated by the arrow.

The roller 18 rotates at the same circumferential speed and in the same direction as the packing wheel 9 while substantially contacting the outer periphery of the packing wheel 9 at the supply station 19 .

The line 7 has a wheel 90 rotating shaft and a wheel 13.
The packing is carried out at an unloading station 22 on the downstream side of the station 14 as seen from the direction of rotation indicated by arrows 20 in the figure, and includes a wheel 21 of a known type which rotates intermittently about a horizontal axis perpendicular to the axis of rotation of the packing machine. A delivery conveyor 23 of known type receives the packs 8 from the wheels 9.
is being transferred to. In the unloading station 22, the outer periphery of the wheel 21 is positioned on the outer periphery of the wheel 9 in a known manner, and a horizontal pushing member 24 (FIG. 2) extracts the packaged product in the radial direction of the wheel 9 in a known manner. and can be supplied to the wheel 21 from its axial direction. Thus, in other words, in the packaging machine I, the stacks 3 of cigarettes are fed intermittently to the wheel 9 at the feeding station 14, the blanks 5 are fed continuously to the wheel 9 at the station 19, and the wrapped packs 8 are fed to the wheel 9 at the feeding station 14; 9 to the station 22 intermittently.

As best seen in FIG. 2, the wheel 9 comprises a fixed central column 25 from which extends laterally a rod 26 for actuating said pusher member 24. Further, an annular member, that is, a drum 27, is rotatably attached to the central column 25 on the wheel 9, and is rotated at a constant speed around the axis of the central column 25 by a known actuating means (not shown). .

A generally U-shaped pocket 28 is arranged on the outer periphery of the drum 27 so that its longitudinal axis is parallel to the axis of the drum 27. Each of the pockets 28 is connected to the drum 27 by an articulated support device 29, the outline of which is defined by three points formed on the protrusion of the central column 25, as shown in FIG. It is controlled by cams 30, 31 and 32.

As shown in FIG. 3, each pocket 28 has a bottom surface 33 facing the outer peripheral surface of the drum 27, and side portions 34 provided perpendicularly to the bottom surface 33 on both sides of the bottom surface 33 and extending parallel to the rotational axis of the drum 27. It is equipped with

Together with the bottom surface 33, the side surfaces 34 form a seat surface 35 for receiving a stack of cigarettes 3 arranged parallel to the axis of rotation of the drum 270.

The side surface portion 34 includes an end portion 36 that expands outward from the seat surface 35 via an introduction slope 37.

Furthermore, a bracket 38 having a generally Z-shaped cross section is integrally attached to the outside of each side surface 34 . The Z-shaped cross section of this bracket 38 is connected to the side surface 3.
A first arm portion 4o extends parallel to the side surface portion 4 and is integrally connected to the side surface portion 34, and a second arm portion 4o extends outward from the end of the arm portion 39 perpendicularly to the side surface portion 34. and a third third member extending outward from the free end of the arm portion 40 in parallel with the side surface portion 34, and whose end portion is located outside of the portion 36 of the side surface portion 34 with respect to the drum 27. The arm part 41 is provided.

As shown in FIG. 3, each joint structure support device 29
is provided with three connecting rod crank members 42,43,44 which are respectively pivoted at points 45,46,47 on the drum 27 and parallel to the axis of rotation of the drum 270. It is designed to rotate around the axis. The member 42 comprises a connecting rod 48, one end of which is pivoted at a point 49 on the respective bottom surface 33 and rotates relative to the bottom surface 33 about an axis parallel to the axis of rotation of the drum 27. It looks like this. Also connecting rod 4
The other end of 8 is pivotally connected to the free end of a first arm of a rocker arm 50, said first arm pivoting about an intermediate point 45, and having one end attached to a cam follower connected to the cam 30. It is pivoted to 2 arms. The member 43 also includes a connecting rod 52, one end of which is pivotally connected to a point 49 on the respective bottom surface 33.
The other end of the connecting rod 52 is pivotally connected to the free end of the first arm of the rocker arm 53.
The arm pivots about intermediate point 46 and is pivotally connected at one end to a second arm attached to a cam follower connected to cam 31. Additionally, member 44 includes a connecting rod 55;
One end of the connecting rod 55 is pivotally connected to a point 56 on each bottom surface 33 that is spaced a predetermined distance from a point 49 where the connecting rods 48 and 52 are connected, and the rotation of the drum 27 with respect to the bottom surface 33 is controlled. The other end of the connecting rod 55 is pivoted to the free end of a first arm of a rocker arm 57, said first arm pivoting about an intermediate point 47. At the same time, one end is pivotally connected to a second arm attached to a cam follower connected to the cam 32.

Therefore, rocker arms 50 and 5 about pivots 45 and 46
By appropriately controlling the angles of 3 through cams 30 and 31, respectively, the pivot 49 is brought into a state in which the longer of the pivots 45 and 46 and the members 42 and 43 are fully extended with respect to the drum 27. Within the space between the position occupied by the pivot 49 and the position occupied by the pivot 49, any movement can be made along any path. Additionally, the rocker arms 5 around the respective pivots 47
By adjusting the 70 angle, the inclination of the bottom surface 33 can be varied with respect to the radius passing through the pivot axis 49 of the drum 27 within a predetermined angular range.

The shape of the cams 30, 31, and 32 necessary to make each pocket 28 move in a predetermined path along a predetermined path is such that the pocket 28 is made to perform the necessary movement while rotating the drum 27, and is integrated with the fixed column 25. It is only necessary to determine the movement path of the cam follower 51, 54, 58 on the provided disk.

During most of the rotation about the central axis with the drum 27, each articulation support device 29 engages the cam 30.
31 and 32 are kept in a constant state, hereafter referred to as "normal position", each pocket 28 is held in a fixed "normal" position relative to the drum 27, and the respective bottom surface 33
is kept perpendicular to the radius of drum 27 passing through pivot axis 49. In order to hold the articulating structure support device 29 in the above-mentioned normal position, the cams 30, 31, 32 have an arcuate shape concentric with the axis of rotation of the drum 27. When the joint structure support device 29 is in the normal arrangement, each pocket 28 moves as if it were integral with the drum 27. In other words, the pocket 28 rotates at the same angular velocity as the drum 27 while keeping a constant distance from the central axis of the drum 27, and the inclination angle with respect to the radius of the drum 27 is also kept constant. That is, when the joint structure support device 29 is in the normal arrangement state, the pocket 28 further extends around the central axis of the drum 27.
It moves on a track that is in contact with the outer periphery of the roller 18 at the same circumferential speed as the delivery roller 18 of the line 4 that supplies the blank 5 .

Next, the packaging machine I will be described, in particular the action of the wheel 9, for one pocket 28, starting from passing through the feeding station 19, each with the articulated support device 29 in its normal position.

At the supply station 19, the pocket 28 is
are moved in the same direction and at the same speed as each blank 5, while the blanks 5 are moved in a known manner by the delivery roller 18.
and engages pocket 28. At this time, the brackets 38 on the second pocket are attached to the edges 5 on both sides of the blank 5.
9 is held between the arms 41.

As the pocket 2 rotates with the drum 27 and approaches the feed station 14, the normally disposed arcuate shape of the cams 30, 31, 32 changes, causing the articulated support device 29 to change from its previously described normally disposed state. . As a result, the pocket 28 is gradually accelerated in the rotational direction opposite to the drum 27 until it cancels out the rotational speed of the drum 27, and comes to rest at the station 14. And pocket 28
While the wheel 13 is stationary, the pushing member 1 moves in the radial direction while the inclination of the drum 27 with respect to the radius remains unchanged.
5, the tobacco stack 3 is received on the inner sheet surface 35.

This tobacco stack 3 is inserted into the sheet surface 35 by means of a push member 15 in such a way that the side parts of the blank 5 can be folded in a known manner. Next, the joint structure support device 29
The arrangement of the pushing member 1 gradually changes, and the pocket 2 is replaced by the pushing member 1.
5 and returns toward the rotation center of the drum 27.

During this time, the pocket 28 continues to rotate at a constant angular velocity. The pocket 28 moves backward against the pressing force of the tobacco stack 3 during its return movement, and the position of the stack 3 is controlled to be constant throughout the transfer from the wheel 13 to the wheel 9. The positioning of this posterior articulation support device 29 changes continuously to accelerate the pocket 28 back to the position it occupied previously in its normally placed position on the drum 27. While rotating between stations 14 and 22 about the central axis of drum 27 with pocket 28, blank 5 is folded into a stationary folding device (see FIG. 2 with reference numeral 11).
) is folded around the tobacco stack to form a bag 8.

When the pocket 28 approaches the station 22, the shape of the joint structure support device 29 changes, the pocket 28 comes to rest at the station 22, and the rod 26 of the pushing member 24 moves toward the bottom surface 3.
3 through holes (not shown) to engage the seat surface 35 to hold the bank 8 in position during transfer to the wheel 21.

The shape of the articulating structure support device 29 is then changed and the pocket 28 is continuously accelerated and moved back to the place it occupied before reaching station 19 on the drum 2T;
Pocket 28 is thus made available to receive another blank 5 and repeat the packaging process described above.

Each pocket 28 is provided with an articulated support device 29 that allows the pocket 28 to be moved arbitrarily relative to the drum 27.
can now be kept stationary at a specific point around the central axis of the drum 27 for any desired length of time, and it has become possible to use a continuously rotating packing wheel 9. This makes it possible to (1) eliminate the severe acceleration and deceleration that would be applied to the packaging bag when using a normal intermittent packing wheel, and (2) use a continuous line 4 for supplying blanks 5. , which allows precise control of the position of the blank 5 before it engages the pocket 28.

(3) Furthermore, the highly complete and highly reliable known intermittent operation line 2 and the intermittent operation take-out line 7 as shown in the embodiment can be used.

There are other effects.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a packaging machine according to the invention, and FIG.
It is a partially enlarged view of the machine of FIG. 1, and is simplified by omitting unnecessary parts. FIG. 3 shows a partially enlarged view of FIG. 2. 3... Cigarette stack, 5... Blank, 7...
... Delivery device, 8... Bank after packaging,
9... Packing wheel, 14... Second supply station, 19... First supply station, 22... Unloading station, 27... Drum,
35... Seat surface. F Engineering G. F Engineering G. Procedural amendment (method) % formula % Display of the case 1999 Patent Application No. 309404 Name of the invention Person making the amendment to the method for packaging cigarettes Relationship to the case Name of the patent applicant Gee, De Sochetaberazioni Agent Address: 8-10, Toranomon-chome, Minato-ku, Tokyo 105 Date of amendment order: 6, Subject of amendment (1) Specification (2) Drawing 7, Contents of amendment (1) Engraving of specification (no change in content) ) (2) Engraving of drawings (no changes in content) 8. List of attached documents (1) Engraved specifications (2) 1 copy of engraved drawings

Claims (1)

Claims: 1. A continuously rotating packing wheel (9) is continuously fed with flip-top pack blanks (5) at a first feeding station (19) and at the same time a stack of unwrapped cigarettes ( 3) is fed in an intermittent operation at the second supply station (14), and then the packed pack (8) is taken out from the packing wheel (9) at the take-out station (22) and transferred to the delivery device (7). The packing wheel (9) has a drum (2) rotating at a constant speed.
7), a plurality of sheet surfaces (7) connected to said drum (27) and receiving blanks (5) and accumulated tobacco (3) at said first (19) and second (14) feeding stations, respectively; 35), each of the above seat surfaces (
35) to the drum (27) when passing through the first supply station (19).
7) at a substantially constant rotational speed, and then in the second supply station (14), the drum (27) moves in a direction opposite to the rotation of the drum (27).
27) A method for packing cigarettes into flip-top packs (8), characterized in that the movement relative to the drum (27) is controlled so as to move backwards at a speed equal to the rotational speed of the drum (27). 2. The feeding device (7) performs an intermittent operation, and the sheet surface (35) is rotated in the direction opposite to the rotation of the drum (27) at the take-out station (22). A method according to claim 1, characterized in that the movement of the drum (27) is controlled so as to move backward at a speed equal to the speed. 3. Said sheet surface (35) is connected to said drum (3) during said reverse operation at said second feeding station (14).
3. The boxing method according to claim 1, wherein the box packing method is controlled to move back and forth in the radial direction of 27) between a normal standby position and a protruding supply position. 4. The drum (2) on each sheet surface (35)
7) is performed by changing the shape of an articulated support device (29) provided between each of the seat surfaces (35) and the drum (27). The boxing method described in any one of Items 1 to 3. 5. The aggregate (3) of cigarettes is the aggregate (3) of cigarettes.
The second
and at said second feeding station (14) said extrusion means (15
) is fed into the packing wheel (9) by feeding into the seat surface (35) in the supply position, and the seat surface (35) acts as a pressing member when moving radially to the normal standby position. A boxing method according to claim 3 or claim 4, characterized in that the packaging method is characterized in that: